Full Stack Developer

Role: Full Stack Developer (AI-focused) Portfolio: Logistics Location: Based in Montreal. Fully Remote. About Valstone Valstone acquires, operates, and provides a permanent home for mission critical technology businesses serving essential industrial and asset heavy markets globally. Valstone's mission is to build industry-leading positions across five key sectors: agriculture, logistics, food processing, bulk materials, and manufacturing, serving as an active operating partner to its portfolio companies. This role sits within one of Valstone's logistics portfolio companies — a transportation technology business that builds mission-critical software used by ports, railroads, and terminal operators across North America to automate gate operations and improve transportation execution. The Opportunity We're looking for an experienced Full-Stack Developer to join the team behind a legacy gate and kiosk system relied on every day by some of the largest ports and railroads in North America. This is a hands-on build role: you'll design and ship a React.js frontend and Go-Lang backend, working closely with product and operations to replace legacy workflows with a faster, more reliable experience for terminal staff, drivers, and rail crews. Beyond the core modernization, we expect to develop new products ancillary to the platform — you'll help shape and build that roadmap as it takes form, not just maintain what exists today. We also expect a baseline comfort using modern AI-assisted development tools (Claude, Cursor, Codex, or similar) as part of your day-to-day workflow. What You'll Do Design, develop, and maintain applications with a React.js frontend and Go-Lang backend, with a near-term focus on modernizing a legacy gate and kiosk system.Lead or contribute to a ground-up refresh of gate/kiosk workflows used by port and rail terminals, balancing modernization against zero-downtime requirements for mission-critical, 24/7 operations.Help design and build new products ancillary to the core platform as that roadmap develops.Build and manage containerized solutions using tools such as Docker.Contribute to the development and deployment of cloud-native applications, leveraging platforms like AWS and Azure.Ensure code quality through thorough reviews, testing, and adherence to best practices.Collaborate with cross-functional teams — product, operations, and support — to define requirements and deliver solutions.Identify and resolve performance bottlenecks, bugs, and other application issues.Use AI-assisted development tools (e.g., Claude, Cursor, Codex) to accelerate delivery while maintaining code quality and security standards.Mentor junior developers, helping build team capability as the team grows. What You'll Need Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent experience).3+ years of professional software development experience, with full-stack expertise.Proficiency in React.js and Go-Lang, with a proven ability to deliver production-quality applications.Baseline comfort working with AI-assisted development tools such as Claude, Cursor, GitHub Copilot, or Codex as part of a modern engineering workflow.Hands-on experience with containerized solutions (e.g., Docker, Kubernetes).Familiarity with cloud platforms like AWS or Azure for application deployment and scaling.Strong understanding of RESTful API design and integration.Solid grasp of database technologies, including Microsoft SQL.Excellent problem-solving and debugging skills.Strong communication skills, both written and verbal, with the ability to explain complex technical concepts. Nice to Have Experience with .NET is a strong advantage.Prior experience in transportation, ports, rail, or other mission-critical industrial software.Knowledge of CI/CD pipelines and DevOps practices.Familiarity with monitoring and logging tools like Prometheus, Grafana, or Splunk.Knowledge of microservices architecture and best practices.